Observatorio de I+D+i UPM

Memorias de investigación
Ponencias en congresos:
Surface Instabilities and Reorientation Induced by Vibration in Microgravity Conditions
Año:2012
Áreas de investigación
  • Mecánica de fluidos,
  • Ciencias del espacio,
  • Ingeniería aeronaútica
Datos
Descripción
The behavior of vibrated fluids and, in particular, the surface or interfacial instabilities that commonly arise in these systems have been the subject of continued experimental and theoretical attention since Faraday?s seminal experiments in 1831. Both orientation and frequency are critical in determining the response of the fluid to excitation. Low frequencies are associated with sloshing while higher frequencies may generate Faraday waves or cross-waves, depending on whether the axis of vibration is perpendicular or parallel to the interface. In addition, high frequency vibrations are known to produce large scale reorientation of the fluid (vibroequilibria), an effect that becomes especially pronounced in the absence of gravity. We describe the results of investigations conducted at the ESA affiliated Spanish User Support and Operations Centre (E-USOC) on the effect of vibrations on fluid interfaces, particularly the interaction between Faraday waves, which arise in vertically vibrated systems, cross-waves, which are found in horizontally forced systems, and large scale reorientation (vibroequilibria). Ongoing ground experiments utilizing a dual-axis shaker configuration are described, including the effect on pattern formation of varying the two independent forcing frequencies, amplitudes, and phases. Theoretical results, based on the analysis of reduced models, and on numerical simulations, are then described and compared to experiment. Finally, the interest of a corresponding microgravity experiment is discussed and implications for fluid management strategies considered.
Internacional
Si
Nombre congreso
39th Scientific Assembly of the Committee on Space Research (COSPAR)
Tipo de participación
960
Lugar del congreso
Mysore, India
Revisores
No
ISBN o ISSN
11-1111-111-1
DOI
Fecha inicio congreso
14/07/2012
Fecha fin congreso
22/07/2012
Desde la página
1
Hasta la página
1
Título de las actas
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Jeffrey Brent Porter (UPM)
  • Autor: Ignacio Tinao Perez-Miravete (UPM)
  • Autor: Ana Laveron Simavilla (UPM)
  • Autor: Jose Javier Fernandez Fraile (UPM)
  • Autor: Jose Miguel Ezquerro Navarro (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ciencias y Operaciones Aeroespaciales
  • Departamento: Vehículos Aeroespaciales
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